20723612

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{197}}^1$

素因数の和:255

約数の個数: 72

約数和(自身を含む): 47656224

約数和(自身を除く): 26932612

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 34, 52, 68, 91, 119, 182, 197, 221, 238, 289, 364, 394, 442, 476, 578, 788, 884, 1156, 1379, 1547, 2023, 2561, 2758, 3094, 3349, 3757, 4046, 5122, 5516, 6188, 6698, 7514, 8092, 10244, 13396, 15028, 17927, 23443, 26299, 35854, 43537, 46886, 52598, 56933, 71708, 87074, 93772, 105196, 113866, 174148, 227732, 304759, 398531, 609518, 740129, 797062, 1219036, 1480258, 1594124, 2960516, 5180903, 10361806, 20723612]

約数ペア:

[(1, 20723612), (2, 10361806), (4, 5180903), (7, 2960516), (13, 1594124), (14, 1480258), (17, 1219036), (26, 797062), (28, 740129), (34, 609518), (52, 398531), (68, 304759), (91, 227732), (119, 174148), (182, 113866), (197, 105196), (221, 93772), (238, 87074), (289, 71708), (364, 56933), (394, 52598), (442, 46886), (476, 43537), (578, 35854), (788, 26299), (884, 23443), (1156, 17927), (1379, 15028), (1547, 13396), (2023, 10244), (2561, 8092), (2758, 7514), (3094, 6698), (3349, 6188), (3757, 5516), (4046, 5122)]